水流射程

       原理：水的内部存在着压强，水的压强随深度的增加而增大；在同一深度，水向各个方向的压强大小相等。水桶的一侧开有小孔，随着水深度的变化，从孔中流出的水流射程也不同。

　　操作：观众不断的摇手柄，向透明的圆桶内注水，通过桶壁上的小孔流出，射出的水流打在一个小水车上，从而带动小水车旋转，水车上的混沌摆也会出现随机性或周期性的旋转或摆动。

water current shooting distance

    　Principle: pressure exists in water, and the pressure increase in synch with the depth of the water; under the same depth, the pressure equal in every direction. Upon one side of the barrel, there is one row of holes at different height. Due to the change of water depths, the shooting distance is varied.

　　Operation: rotating the handlebar constantly, the transparent barrel pours in water and shoots it on a waterwheel to make it revolving, the chaos pendulum on the waterwheel will also rotate and sway randomly and periodically.